englishal,
Just thought it'd be safer to use one VRP for outbound traffic, one for inbound on both sides of the zone [ie 2 OB, 2 IB]......
Like Redhill, Liverpool also has a 'one way' system which is published in the AIP. While there is no need to provide separation between VFR flights, the routings do to some degree separate the inbounds from outbounds and cut down on the amount of traffic information that ATC has to pass. This is handy when it gets busy as it is sometimes impossible to get enough R/T time to give all the TI you need to.